Apparatus for condensing steam.



A. W. FISGHER. AFPARATUS Hm CONDENSING STEAM.

APPUCATWN HLED OCT. 25. I913.

Patented Nov. 5,1918.

WIT ER.

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Specification of ii-otters Patent.

iatented Nov. 5, 1918.

Application filed October 25, 1913. Serial No. 137,; 51

To all whom itmay concern:

it known that I, Anarnnnr Frsorinn subject of the Emperor of Germany, residing in the city and county of Philadelpisia, in the Stateoi Pennsylvania, have invented certain new and useful in; Pore ments in Apparatus for Condensing team, odrrrlioh chefollowing is a true and exact description, reference being had to the accompanying drawings, which form a part thereof. 7

.My present invention consists in an apparatusqror condensing steam adapted for use in condensing'the @ihaust steam from steam engines, turbines cndi'thc like.

The primary object of the invention is the g'oint utilization of 'et and surface condensers sass: v icw of reducingithe bulk and cost of the necessary apparatus, and of obtaining certain advantages ordinarily obtainable exclusively with one 'or the other h-y6i of coeidenscr without encountering certaini or diificultifler e$pccally my invention may be said to consist in part in shovel and useful method of condensing .steom :which enables memo-use simple, ompwteasd efficient icondensing nppar toe, and in part in the apprasfis by means of which by improved method is carried on.

In carrying out my invention I employ a jet condenser of common eype which serves as the main condensing device, and also operates to create and maintain the desired vacuum. In conjunction with this jot condenser I ernploy a surface eonolercser recei ing as its cooling Water the mixture of condensate and partially heated cooling Water discharged from the Water outlet of the jet condenser, to condense a portion of the steam passing to the condensing apparatus. Preferably, I pass the steam through the condensing space of the surface condenser and deliver the uncondcnsed residue thereof to the steam inlet of the jet con- By proceeding in this manner I am enabled to efi'cctively utilize the remaining heat absorbing capacity of the water discharged from the jet condenser, which in practice is considerable when the jet condenser serves as the means for establishing and maintaining the vacuum, since under such conditions the ten'iperature of the Water discharged from the jet condenser must in considerably below the tempersteam at the vacuum which is maintained. In the practical use of the condensing apparatus the'jet condenser is relied opera to. perform the major portion of the condensingoperation, and theapparatus as a whole is characterised by the typically small bulk of jet condensing apparatu as compared withthe' lar bulk of surface condensing apparatus. The surface condensing portion ,ofthe apparatus enables me to increase the efliciency of the apparatus by reducing. the amount of cooling Water rcquirsd. Furthermore, in the combinaiion of apparatus it is unnecessary to provide any separate air pump, such as is ordinarily required in connection with a surface condenser.

The various features of novelty which characterize my invention are pointed out with particularity in the claims annexed i0 and forming a part of this specification. For a hotter understanding of the invention, however, and of the advantages possessed by it, reference should be had in the accompanying drawing and descripfijse matter in sshich I have illustrated and described a preferred and novel form of apparatus by means of which my nosed {method of condensing steam may be carried on.

The one figure of the drawing is a seciional elevation of a preferred construction cmbodyin my invention.

In the ironing, A'represents a jet condenser of common type formed with a mixing nozzle A passing through the steam inlet' chamber A of the jet condenser and formed with a plurality of inclined inlet ports A leading to the interior of the mix' in nozzle A from the steam space. The mixing nozzle receives the cooling Water through the supply pipe B and expanding nozzle B, and delivers cooling Water, condensate and air admixed therewith into the usual recompressing discharge nozzle C. The latter discharges into the water inlet chamber D of a surface condenser the we tcr outlet chamber 1) of which is connected to the discharge pipe H running to the cooling tower or other receiver for the condensate and heated cooling water discharged from the condensing apparatus. The Water inlet and outlet compartments D and D are connected by the usual tubes (1 traversing practice be store of the the steam space D of the surface condenser. The steam to be condensed by the apparatus is admi ted to the steam space of the surface condenser through the steam supply pipe E and the uncondensed residue, which, in praclice will be considerably more than half of the steam supplied to the surface condenser,

passes from the steam space D of the surface condenser to the steam inlet chamber A of the jet condenser through the pipe F. The water of condensation forming in the surface condenser is withdrawn through the pipe G, which may be connected to an ordinary condensate pump. \Vith the appara tus described, however, the condensate pump need not be a mixed air and water pump, as the air and other non-condensable gases or vapors entering the steam condensing space D are swept out of the latter into the jet condenser which discharges them along with the condensate and cooling water.

In order to obtain substantial advantages from the use of the surface condenser in the combination described, the surface condenser need be but a small fraction in bulk of a surface condenser capable of condensing all of the steam passing to the condensing apparatus through the pipe E, and the surface condenser may advantagcously be directly connected between the recompressing nozzle C of the jet condenser and the dischr-irge pipe H of the apparatus, as shown in the drawing.

\Vhile in accordance with the provisions of the statutes I have illustrated and described the best form of my invention now known to me, it Will be apparent to those skilled in the art that changes may be made in the form of apparatus disclosed without departing from the spirit of my invention, and that under some conditions certain features of my invention may be used to advantage without a corresponding use of other features.

Having now described my invention, What I claim as new and desire to secure by Letters Patent, is:

1. Steam condensing apparatus comprising a jet condenser having the usual expanding. mixing and recompressing nozzles and steam inlet chamber, and in combination therewith a surface condenser having a steam space and a cooling water space, the latter comprising tubes in line with and comparable in aggregate cross sectional area with the cross sectional area of said recompressing nozzle and receiving the discharge from the latter, and connections for passing the steam to be condensed by the apparatus into the steam space of said surface condenser and for passing the uncondensed resi-- due from said steam space into the steam inlet chamber of the jet condenser.

Steam condensing apparatus comprisin a jet condenser having the usual expanding, mixing and recompressing nozzles and steam inlet chamber, and in combination therewith a surface condenser comprisin a steam space traversed by cooling water tu es and tube sheets into which the ends of said tubes are connected, said tubes extending parallel to the axis of said recompressing nozzle, one of said tube sheets extending across and closely adjacent to the enlarged end of said reeompressing nozzle and being approximately of the same area as the cross sectional area of the larger and of said recompressing nozzle whereby the water discharged through said recompressing nozzle from the jet condenser will pass directly into said tubes, and connections for passing the steam to be condensed by the apparatus into the steam space of said surface condenser and for passing the uncondensed residue from said steam space to the steam inlet chamber of the jet condenser.

ADALBERT W. FISCHER.

Witnesses:

J. B. SLEATZER, SIMON W. SNYDER.

copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. O. 

